Waec Model Questions Vol1 2018 Chemistry Question 21
Practice objective / multiple choice question 21 from the 2018 Waec Model Questions Vol1 Chemistry examination.
An ore contains 68% iron by mass. The ore is processed as follows: (i) magnetic separation removes 15% of the ore mass, and the removed portion contains 90% iron; (ii) the remaining ore is roasted, losing 5% of its mass (iron content remains unchanged); (iii) the roasted ore is reduced to obtain pure iron with a 98% recovery. What percentage of iron is obtained relative to the original ore mass?
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About This Question
This is Waec Model Questions Vol1 2018 Chemistry Question 21. It is one of the objective questions from the 2018 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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